How Much Does an Accountant Charge for Self Assessment in 2025?

published on 22 August 2025

If you’re self-employed, a company director or earning income outside PAYE, filing a Self Assessment tax return is mandatory. But how much should you expect to pay an accountant in 2025?

💷 Self Assessment Costs in 2025: What You Need to Know

Accountants’ fees for a standard Self Assessment return typically range from £149 to £450, depending on:

  • Your sources of income (employment, property, investments, overseas, crypto)
  • Whether you’re self-employed or a limited company director
  • The complexity of your tax affairs
  • Your location
  • Any additional services required (e.g. bookkeeping, VAT, payroll)

At Taxwise Accountancy, we keep our fees transparent, fair and tailored to your individual needs, no hidden charges.

📊 Self Assessment Accountant Fees at a Glance

Here’s a typical breakdown of UK-wide average accountant charges in 2025:

💼 Breakdown by Income Band (Self-Employed Sole Traders)

If you're self-employed and operate as a sole trader, your fee for annual accounts and tax return will depend on your business income. This could apply to:

  • Minicab drivers. 
  • Plumbers. 
  • Electricians. 
  • Freelancers. 
  • E-commerce sellers. 
  • And many other small business owners

🏢 Location Matters – Why Accountant Fees Vary by Area

The location of your accountant can significantly affect the cost of your tax return. Accountants in major cities like London often charge higher fees due to increased overheads and demand.

 If you’re based in London and looking for tax return support, we work with many clients across the capital.
👉 View our London accountant services

🌐 Save With Remote Accounting

Many clients are now turning to online accountants to reduce costs without sacrificing quality. Since online accountants don’t need expensive offices in city centres, they often pass the savings back to clients. At Taxwise Accountancy, we serve clients across the UK with easy-to-use remote services.👉 Learn more at www.tax-wise.co.uk

🚀 Not Registered for Self Assessment Yet?

If you’re newly self-employed or earning untaxed income for the first time, you’ll need to register with HMRC before you can file a return. We offer free online registration as part of our service.

  👉 Register here for free

  ❓Do You Need an Accountant for Self Assessment?

Technically, you can file a tax return yourself via HMRC. But using an accountant ensures: 

  • Your return is filed accurately and on time. 
  • You claim all allowable expenses and deductions. 
  • You reduce your risk of HMRC penalties or overpayment

Peace of mind during tax season  

✅ Why Choose Taxwise Accountancy?

We specialise in helping: 

  • Sole traders. 
  • Landlords. 
  • Contractors. 
  • Limited company directors. 
  • Partnerships. 
  • High earners with multiple income sources

We’re based in Luton and serve clients across the UK, offering fixed fees, professional service, and support all year round not just at tax time.

📅 Need Help With Your 2024–2025 Tax Return?

We’re now taking bookings for the 2025 Self Assessment season. Don’t leave it until the January deadline. Get expert help early and stay compliant. 

📞 Book your free consultation or Contact Us to get a tailored quote.  

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